The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2001
Filed:
Mar. 05, 1999
Frank Gerardus Cornelis De Bot, Roosendaal, NL;
Johannes A. G. Van Dongen, Roosendaal, NL;
Frans J. Traksel, Roosendaal, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A method of manufacturing a low-pressure mercury vapor discharge lamp starting from a discharge vessel (,) wherein a closed holder (,) is placed which is provided with a quantity of one or more substances to be introduced in the discharge vessel (,). Subsequently, a desired gas atmosphere is brought about in the discharge vessel (,) and the discharge vessel is closed. Finally, the holder (,) is opened. According to the invention, the holder (,) is made from a leadoxide containing glass, which leadoxide is partly reduced and in which the amount of reduction is a measure of the mercury content of the holder (,). Due to the reduction process holders (,) with different mercury contents have a different color.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile